Mathematical structures

Question

Suppose that the New Jersey state senate has a democrat to republican ratio of 5:3. The state senate has 40 members. How many are democrats and how many are republicans?

A) 15 Democrats and 25 republicans

B) 25 Democrats and 15 republicans

C) 30 Democrats and 10 republicans

d) 20 Democrats and 20 republicans

e) 10 Democrats and 30 republicans

Answer 1

5/8 of 40 are Democrats = 25

3/8 of 40 are Republicans = 15

B is correct